Erosion Path

A few weeks ago some Fifth Grade students, after an enormous rain storm, traveled on their garden path created by previous 5th Graders. What they discovered was surprising. First of all most of the gravel underneath our picnic table had been washed down the path. You may think that they are just footprints, like Christopher, but who listens to him? Anyway that is unlikely because the gravel was carried all along the trail, as shown in the video. The water carried a lot of ribbon and junk through the sewer and out into the forest. Also the tiny creek got a lot deeper and moved some big rocks and soil. Now some plants are starting to grow over the edge because the river got wider.

Stream Floods

In science we did a stream table flood. The stream table wash us all away with the amazing conclusion. For this experiment we needed a flood cup, ruler, tray with a hole at the end, a right angled wood or a fat book, collecting cup and sand. Lay the sand so it is 20'' flat and make an incline. Then put the ruler so that it can hold the flood cup. After that put water in the flood cup, so that the tray would flood. Put water in the flood cup and wait for it to make a delta or to get weathered. Let the water collect in the cup. My conclusion is when we made a bigger hole the "flood" water went faster from the flood cup and if you had didn't have a right angled wood, then the water would go no where.

The Rain Lab

The rain lab cutting through the sand

Here is a new way to show how an erosion works. An erosion works by some rain falling down on an area and the longer it falls and the more it falls through the years then it can cut through the rock. That's what happened to the Grand Canyon. And we thought it was Paul Bunyan's pickax!

Glaciers

Recently in science we have been doing flood tables. There are 3 parts. Rain, flood, more rain, and glaciers. This post will be about the glaciers. We took a tray, and filled it with sand on one side, and put a giant ice-disk on the sand. Then we pushed down on the ice-disk and it slip-and-slid down, taking some sand with it.

This is an example of erosion. Erosion is weathered land being moved by natural forces like wind, water, and glaciers. So that is what we did, see you later!